ibew501ed
Senior Member
- Location
- danbury ct/work in white plains ny
Does the code require the GEC to be connected to the neutral bar or can it be connected to the ground terminal bar if a main bonding jumper is installed between the 2 bars
I would think it would depend on the bonding jumper size. I would reference art. 250.68 and 250. 64 and it does not say it must be connected to the neutral bar.Does the code require the GEC to be connected to the neutral bar or can it be connected to the ground terminal bar if a main bonding jumper is installed between the 2 bars
The way we read 250.24(A)(1) we require it to be connected to the neutral bar directly.
(1) General. The grounding electrode conductor connection shall be made at any accessible point from the load end of the service drop or service lateral to and including the terminal or bus to which the grounded service conductor is connected at the service disconnecting means.
I also read this section but if the panel has a bus tie between terminal bars would that change anything
I also read this section but if the panel has a bus tie between terminal bars would that change anything
Is this a service or a seperate building ?
The way we read 250.24(A)(1) we require it to be connected to the neutral bar directly.
(1) General. The grounding electrode conductor connection shall be made at any accessible point from the load end of the service drop or service lateral to and including the terminal or bus to which the grounded service conductor is connected at the service disconnecting means.
It would not change the way electrons behave, as the two points are electrically connected. But it is not what the code words say to do.I also read this section but if the panel has a bus tie between terminal bars would that change anything
If you take the wording of that you could only connect to the bar the grounded conductor is hooked to right? Thats how I read it.
I swear I saw in ec@m a drawing that showed a jumper and saying its legal because the connection wasnt dependent on the can.
I have to agree with Gus here (I have to, because he agreed with me once recently, so I owe him one. :grinIt would not change the way electrons behave, as the two points are electrically connected. But it is not what the code words say to do.
Let's consider an absurd example. Suppose from the main service panel a feeder is run to a distribution board in the same room. Suppose that feeder has a "big enough" EGC. Can you connect the GEC to the ground bus in the distribution panel, since that bus is electrically connected to the ground bus in the main panel, which in turn is electrically connected to the neutral bus in the main panel, so it is essentially the same point, right?
I was speaking of two wires: the MBJ between the N and G bars in the main panel, and an EGC from the G bar in the main panel to the G bar in the downstream panel. As I said, it was an example of absurdity.Would that wire between the neutral in the main and the dist panel be a MBJ?
I was speaking of two wires: the MBJ between the N and G bars in the main panel, and an EGC from the G bar in the main panel to the G bar in the downstream panel. As I said, it was an example of absurdity.
So the other way to look at it is--- a mb panel with 2 factory neutral bars- one on each side of the panel. The grounded conductor is connected to the bar on the left side (remember this is also factory connected to the bar on the right side). Now are you all saying I cannot connect the GEC to the right bar? I don't buy it.